"Minceta" was a naming convention introduced by Noj and wouldn't have been used to describe any of the sets in the past.
It's believed Jakopovic may have been the manufacturer of the original Pero Pocek designed sets for the Olympiad. This suggests Jakopvic made various Dubrovnik styled sets. I think it's reasonable to assume he varied his sets over time (and I think this is what Noj tried to capture the essence of with their Minceta).
It seems likely that Jakopovic was the creator of the set that appeared on the cover of Life magazine (though your Fischer reference image does not appear to be this set... the set on the cover looks much more worn). This adds to the likelihood that Fischer owned multiple Jackopovic made sets, however, there is no photo evidence of him owning a set from the Olympiad and his interview can be interpreted in different ways so it may not be the most reliable source.
Great work!
It is very difficult to determine from the pictures exactly what Fischer's set was like.
I think that the rook in Fischer's set is something between two Noj rooks, Minceta and Dubrovnik II.
But let me show you how robust the original Jakopovic rooks really are. For comparison, I use two different Jakopovic rooks and a typical plastic club set, because I think that everyone knows what such a set looks like:
I took the liberty of pasting "Fischers" Dubrovnik set over the NOJ "Minceta" & "Dubrivnik II" sets (with them being slightly transparent of coarse). I believe the results speak for themselves.
They are pretty much identical to the "Minceta" minus the angle difference! Also look at the Bishops top shape, they are identical in the Minceta version and too tear dropped in the Dubrovnik II set. Another similarity is the stems to the King and Queen...the Minceta's are as thick as Fischers where the Dubrovnik II's are slightly narrower. The Queens top is identical in the Minceta too...This was the actual point of this thread and I am glad you posted your opinions and point of views.
This is how we will definitively put this to rest...Yet this picture should again, validate the fact that his set was definitely a "Minceta" version of the Dubrovnik design. Unless you still think otherwise?
"Minceate" "Dubrovnik II"